There are three things that could have happened.
1. It is lost among the jungle out there (my hope)
2. Something ate it (very possible because something ate a new Jade I purchased this yr)
3. It ran away because I have killed every peperonia I have every purchased.(Fantasy but I believe my plants have feelings)
I see the P. obtusifolia all the time at the florist/nursery place I go to occasionally. They sell garden plants but their biggest business is the Florist side and they sell the extra plants that they do not use in their combo pots that they send on the florist side. I thing P. obtusifolia is used as a staple/filler in their pots.